Cara's been known to cause some trouble, but based on photos we've seen, the whole trip seemed pretty innocent. After all, who could have a problem with a newly single young woman celebrating her birthday with her new bestie?

While most 81-year-old celebrities are retiring from public life or riding out the final years of their careers while carefully avoiding controversies that might tarnish their legacy, Joan Rivers has been ruffling more feathers than ever lately, and whether you love or hate her, you've gotta admit it's been entertaining.